I have triggered the error while using kernel image from proposed repository:
2017-04-13 21:55:41.868 | Selected version '4.8.0.48.60' (Ubuntu:16.10/yakkety-proposed [ppc64el]) for 'linux-image-generic'
$ uname -a
Linux mmedvede-test-ratelimit-pkvmci8401 4.8.0-48-generic #51-Ubuntu SMP Wed Apr 12 12:59:15 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux
And confirmed that the printk is now ratelimited. From kernel log:
[ 1725.561053] kvmppc_mmu_book3s_64_xlate: 282675 callbacks suppressed
[ 1725.561057] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561068] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561078] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561088] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561099] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561109] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561119] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561130] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561140] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561150] KVM: Can't copy data from 0x3fff8b7bbc80!
I have triggered the error while using kernel image from proposed repository:
2017-04-13 21:55:41.868 | Selected version '4.8.0.48.60' (Ubuntu: 16.10/yakkety- proposed [ppc64el]) for 'linux- image-generic' test-ratelimit- pkvmci8401 4.8.0-48-generic #51-Ubuntu SMP Wed Apr 12 12:59:15 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux
$ uname -a
Linux mmedvede-
And confirmed that the printk is now ratelimited. From kernel log:
[ 1725.561053] kvmppc_ mmu_book3s_ 64_xlate: 282675 callbacks suppressed
[ 1725.561057] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561068] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561078] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561088] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561099] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561109] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561119] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561130] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561140] KVM: Can't copy data from 0x3fff8b7bbc80!
[ 1725.561150] KVM: Can't copy data from 0x3fff8b7bbc80!